2050865 has 4 divisors (see below), whose sum is σ = 2461044. Its totient is φ = 1640688.

The previous prime is 2050849. The next prime is 2050877. The reversal of 2050865 is 5680502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 430336 + 1620529 = 656^2 + 1273^2 .

It is a cyclic number.

It is not a de Polignac number, because 2050865 - 2⁴ = 2050849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205082 + ... + 205091.

It is an arithmetic number, because the mean of its divisors is an integer number (615261).

2^2050865 is an apocalyptic number.

It is an amenable number.

2050865 is a deficient number, since it is larger than the sum of its proper divisors (410179).

2050865 is an equidigital number, since it uses as much as digits as its factorization.

2050865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410178.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2050865 is about 1432.0841455725. The cubic root of 2050865 is about 127.0512740654.

The spelling of 2050865 in words is "two million, fifty thousand, eight hundred sixty-five".